The answer is D.
An endothermic reaction involves absorbing heat whereas an exothermic involves releasing heat.
Answer:
flowers
blood
bacteria
skin
Explanation:
It is estimated that the Precambrian Era lasted between 3.9 and 4 billion years. Many scientists believe that this era accounts for 90 percent of the world's history.
1. The offspring will be all tall pea plants
2. 3:1 is the ratio for tall and short
